carat
Carat weight can appear differently across different diamond shapes such as round brilliant, princess, pear, oval, cushion, marquise, emerald, radiant or heart. A diamond may have a higher carat weight without appearing larger and two diamonds of the same carat weight can vary in size if one is cut deeper than the other. In other words, it is important to note that carat weight does not necessarily denote size.
This is especially true for the marquise cut as its long and narrow shape creates an illusion of greater size than other shapes of the same carat weight. It is also observed that the marquise’s long and narrow shape makes the wearer’s fingers appear thinner
color
Color refers to the natural tint inherent in white diamonds. In nature, most white diamonds have a slight tint of yellow. The closer to being “colorless” a diamond is, the rarer it is. The industry standard for grading color is to evaluate each diamond against a master set and assign a letter grade from “D” (colorless) to “Z” (light yellow).
Marquise diamonds tend to show more colour than the traditional round or cushion diamond, especially at the endpoints of the diamond due to the marquise having less depth at its tips. In other words, a marquise diamond graded as a G colour will look closer to an H colour round diamond. Hence, because the marquise diamond tends to appear darker, when buying a marquise diamond it is important to choose a colour grade higher than you would normally choose.
clarity
Diamond clarity is a measure of the purity and rarity of the diamond, graded by the visibility of these characteristics under 10-power magnification. A diamond is graded as flawless if, under 10-power magnification, no inclusions (internal flaws) and no blemishes (external imperfections) are visible.
Choosing the clarity of the diamond for your ring is entirely down to personal preference. Some buyers are entirely indifferent to inclusions that are not visible to the naked eye and some buyers are interested in diamonds that are completely or near flawless.
Additionally, when buying and designing a ring for your marquise diamond, we highly recommend creating a design where the points of the marquise are covered in order to prevent any forms of chipping or cracking. Another unique advantage with buying a design where the points are covered is that, if there are any inclusions on the pointed ends they will be covered by the prongs